Polycondensation-Involved Melanin-like Polymers for Enhanced Solar Energy Utilization
Polycondensation-Involved Melanin-like Polymers for Enhanced Solar Energy Utilization
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DOI：
10.1021/acs.macromol.3c00852
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发表时间：
2023-06
期刊：
影响因子：
5.5
通讯作者：
Wanjie Bai;Peng Yang;Hengjie Zhang;Tianyou Wang;Yiyan Yang;Xueqian Zhang;Gaigai Duan;Yuanting Xu;Yiwen Li
中科院分区：
文献类型：
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作者：
Wanjie Bai;Peng Yang;Hengjie Zhang;Tianyou Wang;Yiyan Yang;Xueqian Zhang;Gaigai Duan;Yuanting Xu;Yiwen Li
聚多巴胺(PDA)和聚(5，6-二羟基吲哚)(PDHI)是类黑色素聚合物的典型代表，是一类具有相似聚合物结构的光热功能材料。然而，单体自由基聚合形成的微观结构的混沌仍然阻碍了对其光热性能的有效调节。因此，在自由基聚合过程中，我们引入了醛与5，6-二羟基吲哚(DHI)单体的缩合聚合，以构建更多的D-A对，从而调节大分子内部的能量结构，减小光学带隙。通过这种方法，成功地制备了一系列具有增强可见光吸收和光热性能的PDHI纳米粒子，并将其用于太阳能发电和海水淡化，蒸发效率为91.8%。相信这项工作可以为仿生材料的结构-功能定制提供新的机会，并进一步扩大其在高效太阳能利用方面的应用。
Polydopamine (PDA) and poly(5,6-dihydroxyindole) (PDHI), both typical representatives of melanin-like polymers, are emerging as promising kinds of photothermal functional materials with a similar polymeric structure. However, the chaos of the microstructure formed by free radical polymerization of monomers still hinders the efficient regulation of their photothermal performances. Herein, we introduced condensation polymerization between aldehydes and the 5,6-dihydroxyindole (DHI) monomer during the free radical polymerization process to construct more D–A pairs, which can regulate the energy structures and reduce the optical band gaps within the macromolecules. In this way, a series of PDHI nanoparticles (NPs) with enhanced light absorption of visible light and photothermal properties were successfully prepared and were used for solar power generation and water desalination with 91.8% evaporation efficiency. It was believed that this work could provide new opportunities for the structure–function tailoring of bioinspired materials and further expand their applications for high-efficiency solar energy utilization.